ARWpost interp_method=1 does not work for WRF/Chem v3.3.1

Discussions related to the use of ARWPost

ARWpost interp_method=1 does not work for WRF/Chem v3.3.1

Postby jwsmith9 » Tue Jun 19, 2012 12:21 pm

Hello:

For both ARWpost v2.2 and 3.1, the interp_method = 1 is not produce .ctl and .dat files on the specified pressure levels for WRF/Chem v3.3.1 output. However interp_method = 1 prints the .ctl and .dat on the specified pressure levels with WRF/Chem v3.2.1 data. I have no choice but to use WRF/Chem v 3.3.1 for my research because the pre-processing emissions software for WRF/Chem includes a mercator projection that only works with v3.3.1 and not wit v3.2.


For example even with interp_method = 1 with WRF/Chem v3.3.1 output:

I get this message first

START PROCESSING DATA

WARNING --- I do not recognize this data.
OUTPUT FROM * PROGRAM:WRF/CHEM V3.3.1 MODEL
Will make an attempt to read it.

Then it just prints out the model levels

16.19018
16.38956
16.58874
16.78770
zdef 24 linear 1 1
tdef 13 linear 00Z20MAY2006 60MN
VARS 5
no2 24 0 NO2 concentration (ppmv)
no 24 0 NO concentration (ppmv)
o3 24 0 O3 concentration (ppmv)
hno3 24 0 HNO3 concentration (ppmv)
co 24 0 CO concentration (ppmv)

However with the v3.2 or v3.2.1, I do not get the messages and the data is printed on the specified pressure levels:

225.00000
200.00000
175.00000
150.00000
125.00000
100.00000
tdef 13 linear 01Z30MAY2006 60MN
VARS 8
no2 36 0 NO2 concentration (ppmv)
no 36 0 NO concentration (ppmv)
o3 36 0 O3 concentration (ppmv)
hno3 36 0 HNO3 concentration (ppmv)
co 36 0 CO concentration (ppmv)
tc 36 0 Temperature (C)
dbz 36 0 Reflectivity (-)
max_dbz 1 0 Max Reflectivity (-)


Thanks
jwsmith9
 
Posts: 7
Joined: Tue Jun 19, 2012 12:19 pm

Re: ARWpost interp_method=1 does not work for WRF/Chem v3.3.

Postby glbucher » Tue Jul 10, 2012 2:17 pm

Did you try assigning those levels to the control file? I'm going to try and run WRF chem with just the 27 levels, rather than the 41 I have right now. Maybe that will help. It might be better to just use NCL. The level problem also means that the diagnostics are not computed either. You will have to manually program the function in GrADS.
glbucher
 
Posts: 1
Joined: Tue Jul 10, 2012 1:31 pm


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